Suggest changing argument mutability

Code

fn main() {
    let input = String::new();
    std::io::stdin().read_line(&input).unwrap();
}

Current output

error[E0308]: mismatched types
   --> src/main.rs:5:27
    |
  5 |     io::stdin().read_line(&input).unwrap();
    |                 --------- ^^^^^^ types differ in mutability
    |                 |
    |                 arguments to this method are incorrect
    |
    = note: expected mutable reference `&mut String`
                       found reference `&String`
note: method defined here
   --> /playground/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/io/stdio.rs:412:12
    |
412 |     pub fn read_line(&self, buf: &mut String) -> io::Result<usize> {
    |            ^^^^^^^^^

Desired output

error[E0308]: mismatched types
   --> src/main.rs:5:27
    |
  5 |     io::stdin().read_line(&input).unwrap();
    |                 --------- ^^^^^^ types differ in mutability
    |                 |
    |                 arguments to this method are incorrect
    |
    = note: expected mutable reference `&mut String`
                       found reference `&String`
note: method defined here
   --> /playground/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/io/stdio.rs:412:12
    |
412 |     pub fn read_line(&self, buf: &mut String) -> io::Result<usize> {
    |            ^^^^^^^^^
help: change the borrow to be mutable
    |
  5 |     io::stdin().read_line(&mut input).unwrap();
    |                            +++

Rationale and extra context

No response

Other cases

Rust Version

1.97

Anything else?

No response

Reproduce the example in src/main.rs with Rust 1.97 and compare the current diagnostic with the desired output. Use the stdio.rs signature shown in the error as the API context, then locate the compiler diagnostic code responsible for mismatched reference mutability. Done means the diagnostic suggests changing the borrow to mutable without regressing other E0308 cases.